Cooperation of Phosphate Monomer and Silica Modification on Zirconia

Abstract

Ceramic restorations with resin-based adhesive systems have been the focus of recent attention in clinical dentistry. Yttrium-oxide-partially-stabilized zirconia (YPSZ) ceramics have optimized physical properties and exhibit favorable fracture toughness, though their bonding properties are problematic. Although functional phosphate monomers and silica-coating by tribochemical modification were expected to improve the bonding properties between YPSZ ceramics and resin-based adhesives, these two methods remain controversial. This study evaluated the efficiency of silica-coating by tribochemical modification of YPSZ ceramics. The application of phosphate monomer and a silane coupling agent on silica-coated YPSZ was also investigated. The silica-coating of YPSZ ceramics by tribochemical modification was not efficient, given the higher mechanical toughness of the densely sintered ceramics. Stable shear bond strength was achieved on silica-coated YPSZ ceramics with the cooperative interaction of phosphate monomer and silane coupling.

Shear bond strengths of an indirect composite layering material to a tribochemically silica-coated zirconia framework material

“…Therefore, application of a primer combining a phosphate monomer and silane on silica-coated zirconia frameworks facilitated durable bonding of a layering composite material. This finding agrees with the results of previous studies of resin bonding to zirconia 33) . The surface of tribochemically silica-coated zirconia had both the original zirconia and a silica layer (Figs.…”

Effect of Surface Pretreatments on the Microtensile Bond Strength of Lithium-Disilicate Ceramic Repaired with Composite Resin

“…Silane-coupling agents, because of their chemical compatibility and the micro-roughness on the acid-etched surface, allow for sufficient bonding properties by mediating between the ceramics and resin-based adhesives (10).…”

Resin adhesion strengths to zirconia ceramics after primer treatment with silane coupling monomer or oligomer

“…The combination of MDP and a silane coupling agent to enhance the bonding of MDP resin cements has produced positive results compared with MDP-containing cements alone [27][28][29] . Therefore, the results obtained in this study will also be important to improving MDP-containing bonding/silane primer systems.…”